EP 0839825 A1 19980506 - Two-stage method for preparing polyol fatty acid polyesters
Title (en)
Two-stage method for preparing polyol fatty acid polyesters
Title (de)
Zweistufiges Verfahren zur Herstellung von Polyol-Fettsäurepolyestern
Title (fr)
Procédé en deux étapes pour la préparation de polyesters d'acides gras au polyol
Publication
Application
Priority
- EP 96308006 A 19961105
- CA 2189507 A 19961104
- JP 35837996 A 19961209
- US 39874995 A 19950306
Abstract (en)
A two-stage method for the preparation of polyol fatty acid polyesters is provided. The resulting polyol fatty acid polyesters are very lightly colored (i.e., colorless to slightly yellow) and have a high degree of substitution with fatty acid groups. The first stage of this two-stage method is a solvent-based esterification reaction; the second stage is an essentially solvent-free esterification reaction. In the first stage, a polyol in a solvent (e.g., sucrose in dimethylsulfoxide)) is reacted with fatty acid lower alkyl esters at relatively low temperatures using an alkaline salt catalyst. After the desired degree of esterification is obtained, the resulting partially-esterified polyol fatty acid polyesters and the solvent-containing phase are separated. The separated partially-esterified polyol fatty acid polyesters are further esterified with the same or different fatty acid lower alkyl esters in a second stage with an alkaline salt catalyst using essentially solvent-free, high temperature conditions whereby the degree of substitution is significantly increased. Most of the color bodies and other contaminants capable of producing color are removed with the solvent in the first stage and, therefore, are not present during the higher temperature reaction conditions of the second stage. The resulting polyol fatty acid polyesters, and in particular the sucrose fatty acid polyesters, are especially useful as fat substitutes in food applications and products. <IMAGE>
IPC 1-7
IPC 8 full level
C07H 1/00 (2006.01); C07H 13/04 (2006.01); C07H 13/06 (2006.01)
CPC (source: EP US)
C07H 13/04 (2013.01 - EP US); C07H 13/06 (2013.01 - EP US)
Citation (applicant)
- US 4840815 A 19890620 - MEYER RICHARD S [US], et al
- WO 9200360 A1 19920109 - UNIV ALABAMA BIRMINGHAM RESEAR [US]
- US 4611055 A 19860909 - YAMAMOTO TOSHIAKI [JP], et al
- US 4517360 A 19850514 - VOLPENHEIN ROBERT A [US]
- DD 227137 A1 19850911 - ADW DDR [DD]
Citation (search report)
- [A] EP 0349059 A2 19900103 - UNILEVER NV [NL], et al
- [A] EP 0322971 A2 19890705 - UNILEVER NV [NL], et al
- [A] EP 0254376 A1 19880127 - UNILEVER NV [NL], et al
- [A] EP 0323670 A2 19890712 - UNILEVER NV [NL], et al
- [A] EP 0383404 A2 19900822 - UNILEVER NV [NL], et al
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5681948 A 19971028; CA 2189507 A1 19980504; CA 2189507 C 20041005; EP 0839825 A1 19980506; JP H10168094 A 19980623
DOCDB simple family (application)
US 39874995 A 19950306; CA 2189507 A 19961104; EP 96308006 A 19961105; JP 35837996 A 19961209